Primary or not, in the foreseeable future it's highly unlikely that any Republican will win that seat. There were many unique and one time only factors that came together to bring about Cao's election. A Republican win in this district was a fluke, pure and simple. Hopefully it won't take another 119 years for it to happen again.
Doesn’t mean we can’t pay back Cao in the primary.
After all, who thought Terry McAwful would lost his VA primary.